extern int sys_setup();
extern int sys_exit();
extern int sys_fork();
extern int sys_open();
extern int sys_pause();

fn_ptr sys_call_table[72] = {sys_setup, sys_exit, sys_fork, 0, 0, sys_open, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, sys_pause};